14 week pregnant and anemia. can i take the prenatal vitamin and iron pill together?

they both leave a bad taste, prenatal vitamin has an after taste or smell of fish oil and iron also leaves a very bad after taste for hours. at week 8 i had low iron, so nurse told me to take both these but separately and i tried for a few weeks but i feel so sick afterwards that i stopped taking both. now i'm feeling dizzy/ black out today. could it be because of anemia? does anyone else take both and do you take both the pills together?